Climate Change Data Portal
| 11th National Conference on Science, Policy and the Environment: Our Changing Oceans, January 19-21, 2011, in Washington, DC | |
| 项目编号 | DE-SC0005690 |
| Saundry, Peter | |
| 项目主持机构 | National Council for Science and the Environment |
| 开始日期 | 2011 |
| 结束日期 | 2011-12-31 |
| 英文摘要 | Significant achievements have recently been made for thermal modelling of idealised undisturbed permafrost bedrock. However, most permafrost rock walls inherit significant snow accumulation, which often dominate permafrost evolution and fluctuation throughout time. Climate change alters snow timing, duration and thickness which all influence permafrost development. Our project aims at deciphering snow control in steep permafrost rocks and its sensitivity to climate change. We target at developing 1) a novel methodological/modelling framework to investigate snow forcing, 2) process understanding for snow impact quantification and 3) future scenarios for estimating the impact of snow cover changes in steep permafrost rock walls. Part 2 focuses on surface heat/water flow characterization using continuous snow cover quantification, terrestrial laser scanning (TLS), the calibration of physical snow properties (snow pits) and surface rock temperature (temperature loggers) measurements. Part 1 investigates the subsurface impact of snow on the thermal and mechanical behaviour inside rockwalls using laboratory-calibrated 3D geophysical monitoring (electrical resistivity and seismic refraction tomography) as well as acoustic, hydraulic and geotechnical observation of instability and hydro-mechanical forcing. We aim at developing a realistic model for snow cover and snow melt in steep bedrock (SNOWPACK) and a coupled model that reveals hydro-thermal and hydro-mechanical effects of snow melt infiltration in fractured bedrock (UDEC). Model results will be validated using thermal and mechanical observation in the snow cover, at the rock surface and in the rock subsurface (borehole). The sensitivity of the models to altered snow scenarios will provide a more holistic view on climate change impacts on potentially hazardous permafrost rock faces. |
| 学科分类 | 06 - 生物科学;09 - 环境科学 |
| 资助机构 | US-DOE |
| 项目经费 | 15000 |
| 项目类型 | Grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/75847 |
| 推荐引用方式 GB/T 7714 | Saundry, Peter.11th National Conference on Science, Policy and the Environment: Our Changing Oceans, January 19-21, 2011, in Washington, DC.2011. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Saundry, Peter]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Saundry, Peter]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Saundry, Peter]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
